Synthesis, Molecular Modelling and Biological Studies of 3-hydroxypyrane- 4-one and 3-hydroxy-pyridine-4-one Derivatives as HIV-1 Integrase Inhibitors

Author(s): Hajar Sirous, Afshin Fassihi*, Simone Brogi*, Giuseppe Campiani, Frauke Christ, Zeger Debyser, Sandra Gemma, Stefania Butini, Giulia Chemi, Alessandro Grillo, Rezvan Zabihollahi, Mohammad R. Aghasadeghi, Lotfollah Saghaie, Hamid R. Memarian.

Journal Name: Medicinal Chemistry

Volume 15 , Issue 7 , 2019

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Graphical Abstract:


Background: Despite the progress in the discovery of antiretroviral compounds for treating HIV-1 infection by targeting HIV integrase (IN), a promising and well-known drug target against HIV-1, there is a growing need to increase the armamentarium against HIV, for avoiding the drug resistance issue.

Objective: To develop novel HIV-1 IN inhibitors, a series of 3-hydroxy-pyrane-4-one (HP) and 3- hydroxy-pyridine-4-one (HPO) derivatives have been rationally designed and synthesized.

Methods: To provide a significant characterization of the novel compounds, in-depth computational analysis was performed using a novel HIV-1 IN/DNA binary 3D-model for investigating the binding mode of the newly conceived molecules in complex with IN. The 3D-model was generated using the proto-type foamy virus (PFV) DNA as a structural template, positioning the viral polydesoxyribonucleic chain into the HIV-1 IN homology model. Moreover, a series of in vitro tests were performed including HIV-1 activity inhibition, HIV-1 IN activity inhibition, HIV-1 IN strand transfer activity inhibition and cellular toxicity.

Results: Bioassay results indicated that most of HP analogues including HPa, HPb, HPc, HPd, HPe and HPg, showed favorable inhibitory activities against HIV-1-IN in the low micromolar range. Particularly halogenated derivatives (HPb and HPd) offered the best biological activities in terms of reduced toxicity and optimum inhibitory activities against HIV-1 IN and HIV-1 in cell culture.

Conclusion: Halogenated derivatives, HPb and HPd, displayed the most promising anti-HIV profile, paving the way to the optimization of the presented scaffolds for developing new effective antiviral agents.

Keywords: 3-hydroxy-pyrane-4-one, 3-hydroxy-pyridine-4-one, halogenated derivatives, HIV-1 IN inhibitors (HIV-1 INIs), molecular modelling, anti-HIV agents.

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Year: 2019
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DOI: 10.2174/1573406415666181219113225
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